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    <nav class="navbar navbar-inverse navbar-fixed-top navbar-mynav">
      <div class="container">
        <!-- Brand and toggle get grouped for better mobile display -->
        <div class="navbar-header">
          <!--当浏览器宽度小于某个值时，才会显示这个按钮，正常情况下不显示-->
          <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
            <span class="sr-only">Toggle navigation</span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
          </button>
          
           <!-- 有利于SEO优化 -->
          <a class="navbar-brand" href="">

            <img alt="logo" src="/TradePlatform/img/logo1.png" class="logo-logo">
           <span class="logo-text"> 宠比特聚合平台</span>
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        <!-- Collect the nav links, forms, and other content for toggling -->
        <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
          <ul class="nav navbar-nav">
            <li class="active"><a href="/TradePlatform/index.html">首页</a></li>
            <li><a href="/TradePlatform/html/tradecenter.html">交易中心</a></li>
            <li><a href="/TradePlatform/html/dealRecord.html">成交记录</a></li>
            <li><a href="/TradePlatform/html/releaseAD.html">发布广告</a></li>
            <li><a href="/TradePlatform/html/order.html">我的订单</a></li>
           
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          <ul class="nav navbar-nav navbar-right">
            <li><a href="/TradePlatform/html/register.html">注册</a></li>
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            <li class="dropdown">
          <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">用户名 <span class="caret"></span></a>
          <ul class="dropdown-menu">
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        </div><!-- /.navbar-collapse -->
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